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What is the scientific word for a gas given off during a chemical reaction?
A reaction that emmits heat is called an exothermic reaction .
Name given to a substance used to speed up chemical reaction?
dis is the eziest question evva.....enzyme
Even if you change the shape and amount of a substance it's stays the same?
This statement is incorrect. Changing the shape or amount of a substance can alter its physical and chemical properties. For example, breaking a substance into smaller pieces can increase its surface area and affect its reactivity, while changing the amount of a substance can change its concentration and impact its behavior in a reaction.
The substance produced a result of a chemical reaction is?
Depends what the chemical reaction is. In all reactions energy is given off. In lot's of reactions also water (Hyrdodgen Oxide/ H2O) and CO2 in some cases. Hope that helped.
Is a candle burns chemical reaction?
Yes, burning a candle is a chemical reaction. The easiest way to tell if something is a chemical reaction is if heat or light are given of, a new substance is formed, or a colour change happens. Chemical changes are irreversible.Yes, whenever a candle burns, it is a combustion reaction between the carbon compounds of the wick and wax of the candle and of oxygen in the air. These compounds burn to create carbon dioxide and water, and also a few smaller carbon compounds, which is evident as the smoke rising occasionally from the flame. The flame you see and the heat you feel rising off of the burning wick is the evidence of an exothermic chemical reaction.Yes, burning a candle is a chemical reaction. The easiest way to tell if something is a chemical reaction is if heat or light are given of, a new substance is formed, or a colour change happens. Chemical changes are irreversible.
How is heat of solution related to heat of reaction?
The heat of solution refers to the heat energy absorbed or released when a substance dissolves in a solvent, while the heat of reaction refers to the heat energy absorbed or released during a chemical reaction. The heat of solution can be a part of the overall heat of reaction if dissolution of a substance is involved in the chemical reaction.
How is stoichiometry used to calculate the mass of a substance?
Unit conversion factors are used to convert between units of grams and moles.
Why is it a sign of a chemical reaction if gas is given off?
It is sign of chemical reaction because smell and heat is produced.
Which element undergoes Oxidation in k2cro4 na2so3 hcl-kcl na2so4 crcl3 h2o?
Chromium undergoes oxidation in the given chemical equation. In this reaction, chromium changes from a +6 oxidation state to a +3 oxidation state, indicating that it has lost electrons and undergone oxidation.
What is a catalyst?
A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It lowers the activation energy required for the reaction to occur, thereby speeding up the reaction. Catalysts remain unchanged at the end of the reaction and can be used multiple times.
Which action would result in a chemical change?
A new substance is produced. Bubbles are given off (fizzing), which shows that a gas has been produced. Color changes. Turbidity (cloudiness) heat/light given off. A sound is produced/an explosion occurs etc
Which term is given to a substance that can not separate into less complex substance by chemical means?
an element
